It is a combination of vertical shell & tube heat exchanger and vapour-liquid separator mounted on top. The feed is given at bottom of the heat exchanger and rises in tubes. ( formed by arranging holes of graphite blocks co-axial).
Features
Can be designed for forced circulation or natural thermosiphon
Multiple effect arrangements can be provided to reduce steam consumption.
Can handle suspended particles.
Effective for concentration of liquids which are moderately heat sensitive
